在室内，你在地上放一个白床单，然后在天花板和墙上喷上一些杀虫剂，蚊子就一个一个地掉在你的脚边。
Indoors, you put a white sheet on the ground, spray some insecticide on walls and ceilings, and the mosquitoes fall on your feet one by one.
在室内，你在地上放一个白床单，然后在天花板和墙上喷上一些杀虫剂，蚊子就一个一个地掉在你的脚边。
Indoors, you put a white sheet on the ground, spray some insecticide on walls and ceilings, and the mosquitoes literally drop at your feet.
本文利用成焦板、四球机试验考察了各清净剂在中间基和加氢基础油中的感受性。
This article investigated the adaptability of all kinds of detergent in different base oil through plate and four ball testing.
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